| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a drive transmission apparatus capable of accurately suppressing, with a simple configuration, a harmful effect caused by variations in the rotation of a photoreceptor drum which occur due to vibrations caused by the engagement of a driving gear with a gear to be transmitted without adding new components. <P>SOLUTION: A central angle θ formed between an exposure point P of the photoreceptor drum and an engaging point Q of the driving gear 40 and the gear 20 to be transmitted is set so as to satisfy the following conditional expression (α in the expression shows a tool pressure angle of a transmitting gear and β shows an angle of torsion of the driving gear) θ = 90°± tan<SP>-1</SP>(cosα× cosβ / sinα). <P>COPYRIGHT: (C)2004,JPO |
